MDU3603 MOSFET 30V 67A 8-Pin DFN for Antminer S17 T17
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MDU3603RH P-Channel MOSFET 30V 67A – Hashboard Repair for Antminer S17 & T17 Series
The MDU3603RH is a P-channel power MOSFET rated at 30 V / 67 A in a compact 8-pin DFN package, used on the hashboards of the Antminer S17, S17e, T17 and T17e. With 7.5 mΩ Rds(on) at 20 V and 38.4 nC gate charge, it provides efficient high-side switching in the ASIC power distribution circuit. Brand-new original QFN8 device.
Why the MDU3603 Fails on S17/T17 Hashboards
The MDU3603 connects the supply rail to groups of ASIC chips as a high-side switch. A failed device either cuts power to its chip group — causing those chips to disappear from the hash chain — or fails short-circuit, damaging the distribution trace. The affected section produces no hash rate until the MOSFET is replaced.
Replacement Procedure
Remove the hashboard and locate the failed MDU3603 near the chip group power input trace. Verify drain-source with a multimeter in diode mode — a short or open confirms failure. Desolder with hot air at 320–350 °C, clean all pads with solder wick. Align pin 1, apply flux and reflow. Confirm megaohm-range drain-source resistance with no gate bias, then reinstall and verify full chip detection.
MDU3603RH MOSFET Specifications
| Parameter | Value |
|---|---|
| Part Number | MDU3603RH |
| Channel Type | P-Channel |
| Drain-Source Voltage | 30 V |
| Drain Current | 67 A |
| Rds(on) | 7.5 mΩ @ 20 V |
| Gate Charge | 38.4 nC @ 10 V |
| Power Dissipation | 2500 mW |
| Package | DFN 8-pin (6.1 × 5.1 × 1.1 mm) |
| Compatibility | Antminer S17, S17e, T17, T17e |
| Condition | New (original) |
Related Antminer S17 / T17 Hashboard Components
- BM1397AG ASIC Chip – Antminer S17 / T17 Hashboard
- BM1396AB ASIC Chip – S17e / T17e Hashboard Repair
- MP1517DR Switching Regulator – Antminer S17 / T17 / S19
- Antminer S17 / T17 Original Control Board
Repairing S17/T17 hashboards at scale? Contact us at contact@lys-sz.com for volume pricing on MOSFETs and board-level components.
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